778785078008 has 32 divisors (see below), whose sum is σ = 1670201096160. Its totient is φ = 333489847680.

The previous prime is 778785077989. The next prime is 778785078013. The reversal of 778785078008 is 800870587877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5664503 + ... + 5800358.

It is an arithmetic number, because the mean of its divisors is an integer number (52193784255).

Almost surely, 2^778785078008 is an apocalyptic number.

It is an amenable number.

778785078008 is an abundant number, since it is smaller than the sum of its proper divisors (891416018152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778785078008 is a wasteful number, since it uses less digits than its factorization.

778785078008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11466087 (or 11466083 counting only the distinct ones).

The product of its (nonzero) digits is 49172480, while the sum is 65.

The spelling of 778785078008 in words is "seven hundred seventy-eight billion, seven hundred eighty-five million, seventy-eight thousand, eight".